Author

HELCOM RED LIST Biotope Expert Team

Textual description

Baltic bottoms in the photic zone with more than 10 %, but less than 90 % coverage of both hard and soft substrata. Coverage of stable aggregations of unattached perennial vegetation is at least 10 %, while perennial attached erect groups cover less than 10%.

Physical environment

Salinity range: moderate to high; Exposure range: low to moderate; Depth range: photic zone, more common in the deepest and the most shallow parts.